Sight for lubricators.



No. 850,711. I PATENTED APR. 16, 1907.

' W. L. ABATE.

SIGHT FOR LUBRIGATORS.

APPLICATION FILED FEB. 27. 1907.

Wvfizea 66', 'w'ezafor 4/ 42 wk") I Walferldwfa vz/z Zy I THE NORRIS PETERS C0,, WASHINGTON, n. c.

2 is a longitudinal axial section of the fol- UNITED srarns ATENT rrron.

WALTER L. ABATE, OF MOUNT VERNON, NEW YORK, ASSIGNOR TO NATHAN MANUFACTURING COMPANY, OF NEl/V YORK, N. Y.

SIGHT FOR LUBRICATORS.

N 0. 850,711. Specification of Letters Patent. Patented April 16, 1907.

To ml? whom, it ntay concern: any approved construction as needed for pur- Be, it known that I, WALTER L. ABATE, a i poses of explanation. The body is provided with the usual cylindrical casing B for the citizen of the United States, residing in Mount Vernon, in the county of Westchester sight-glasses, the intermediate portion 0 of which forms awater-chamb er, through which and State of New York, have invented a new the oil from the feed-nozzle D passes upand useful Improvement in Sights for Lubricators, of which the following is a specificawardly in drops in the usual and well-known manner. E is the usual regulating-valve.

tion.

This invention relates to the sights of The outer end portions of the casing are internally threaded.

sight-feed condensation-displacement lubricators of the bulls-eye type that is to The glass is of the form'shown in Patent say, lubricators in which a solid thick glass No. 844,281 of February 12, 1907, consisting disk is used instead of a tubular glass for of a cylindrical intermediate portion F and observation purposes. two end portions F F of less diameter than The object of the invention is to provide the intermediate portion F, the latter thus simple and efficient means for readily insertconstituting, in effect, a flange, by which the ing the glasses and holding them in place in glass is held in the shell with its inner end their casings so that they will form a tight protruding beyond the shell, as will be presjoint therewith and for conveniently removently described. ing them for purposes of inspection, cleaning, G is a ylindrical tubular follower, exteror replacement. nally threaded to engage the corresponding Under my invention the glass is contained thread in casing B. The inner portion of the in a shell through and beyond the inner end follower beyond its threaded head is reduced of which the inner end of the glass protrudes, in diameter and terminates in an annular this end of the glass being surrounded by a flange G, thus forming on the exterior of the washer confined between the inner end of the follower, between its externally threaded shell and an annular shoulder in the casing in head and the flange G, a wide circular groove which the shell is contained. With the shell G At its outer end the follower is provided is combined a follower adapted to screw into with a hexagonal interior for the reception the casing, which is swiveled to the shell, so of a suitable wrench, by means of which the that while the two move lengthwise together follower may be screwed into or out from the they, together with the glass, can be inserted casing. in and removed from the casing bodily and H is a metallic shell of cylindrical coutour together, the follower bearing against the fully open at its outer end, so that the folsleeve and acting to advance the latter lower-flange G and the larger cylindrical poragainst the washer, which is thus compressed tion F of the glass may readily pass into it, between the inner end of the sleeve and the and having its opposite end partly closed by annular shoulder in the casing and around an annular flange H, which leaves in the inthe protruding neck or inner end of the glass, ner end of the shell an opening of the size and with which it makes a fluid-tight joint. shape to permit the passage therethrough of In the accompanying drawings, to which I' the inner portion F of the glass. shall now refer for a better understanding of In the walls of the shell near its outer end my invention, Figure 1 is a vertical section of are formed. two diametrically opposite segthe preferred form of my invention as applied mental slots in a plane at right angles to the to a locomotive-lubricator, only so muchof axis of the shell, into each of which slots is the lubricator being shown as needed for purdetachably fitted a correspondingly-formed poses of explanation. The remaining figures metallic segment I-I which segments project represent detached parts of the device. Fig. through the slots into the interior of the shell to act as retaining-shoulders. The thickness of these segments is about twice that of the shell, and they are so located that when the parts are assembled they will be opposite to and enter the groove Or in the follower, which will thus be connected to the shell by a joint,

lower. Figs. 3 and4 are a cross-section, partly in elevation, and an axial section, respectively, of the shell. Figs. 5 and 6 are like sections of a modified form of shell.

A is as much of the body of a lubricator of which will permit it to swivel or revolve freely on the latter.

K is an annular washer, of rubber or other approved material, which is seated against an annular shoulder L in casing B and is designed to encircle the inner portion F of the glass, which protrudes through and beyond the shell, said portion F being made long enough for this purpose.

In assembling the parts the segmental pieces H are removed. Then the glass is flrst placed in the shell and next the follower, with its head resting on and bearing against the outer end of the shell, after which the segments H are replaced, their projecting inner portions entering the groove G in the follower and holding the latter securely to the shell, while permitting it to freely swivel or revolve independently of the latter.

The parts thus assembled are inserted as a unit in the casing, in which thewasher K has previously been placed against its seat L, and the follower is then. screwed into the easing. In thus advancing the follower bears upon the end of the shell and pushes it forward. The flanged inner end of the shell is thus caused to bear against and compress the washer, which under this compression will spread laterally, so as to close tightlyaround the portion I of the glass and make therewith a fluid-tight joint. On the other hand, when the follower is screwed out its flange G will be retained in engagement with the shell by the segments H and the glass will be retained in the shell by its larger cylindrical portion, which brings up against the flange II of the shell, and thus the whole arrangementshell, glass, and follower*will pull out of the casing as a unit in the most simple and eflective manner. The washer K will remain bedded in the casing; but, if desired, it may be easily removed. by means of an ordinary hooked wire.

In place of using separate segment-pieces, like H the arrangement shown in Figs. 5 and 6 can be employed. In this modification strips or tongues M are punched from the body of the shell corresponding in width and locality to the segments H In assembling the parts after the glass and follower have been inserted in the shell as already described these tongues are pushed or bent inwardly to enter the groove G of the follower, where they serve the same purpose as the segments H whose place they take.

not desire to be understood as restricting myself narrowly to the structural details hereinbefore set forth, since manifestly the same can be varied to some extent without departurefrom the spirit of my invention; but

What I claim herein as new, anddesire to secure by Letters Patent, is as follows:

1. In a sight for lubricators, a casing, a shell, a glass contained and held in the shell, and a follower connected to, but capable of revolution independently of, the shell, the shell, glass and follower adapted to be inserted in and withdrawn from the casing as a unit, substantially as and for the purposes hereinbefore set forth.

2. In a sight for lubricators, a casing provided with a seat for a washer, a shell adapted to fit in the casing and bear against the washer, a glass held-in the shell with its inner end protruding therefrom through the washer, a follower engaging the casing and connected to, but capable of revolving inde pendently of, the shell, and adapted to push into, or pull out from, the casing, the shell and its contents as a unit, substantially as and for the purposes hereinbefore set forth.

3. In a sight for lubricators, a shell with a flanged inner end, a glass provided with an intermediate portion which rests against the flange in the shell, and with an end portion of less diameter which protrudes through the flanged end of the shell, a follower having an externally-screw-threaded head and a'circular external groove in that portion of it beyond the head, and retaining means on the shell to enter and engage said groove, substantially as and for the purposes set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

' WALTER L. ABATE.

Witnesses:

LEO ARNsTEIN, LEOPOLD KASSANDERY. 

